Bad idea. Ever use a gun with suboptimal perks that feels better to use than another gun with god roll perks? Hidden stats. Equalize aim assist and you make it even harder for suboptimal/underrated guns to stand out against god roll meta weapons. It defeats the individuality and uniqueness between how different guns feel. Not fun at all. This would also hurt heavy weapons that have incredibly high aim assist built into them, like LMG's and DARCI.